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Build a Basic Python Iterator
...increment. This method raises a StopIteration exception when there are no more value to return, which is implicitly captured by looping constructs to stop iterating.
Here's a simple example of a counter:
class Counter:
def __init__(self, low, high):
self.current = low - 1
sel...
Is there a numpy builtin to reject outliers from a list
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This method is almost identical to yours, just more numpyst (also working on numpy arrays only):
def reject_outliers(data, m=2):
return data[abs(data - np.mean(data)) < m * np.std(data)]
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In C#, What is a monad?
...t a; b is basically again a computation that can be combined together with more stuff.
This is a simple monad, it is a way of combing small computations to bigger ones. The ; says "do the thing on the left, then do the thing on the right".
Another thing that can be seen as a monad in object oriente...
Time complexity of Euclid's Algorithm
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@MichaelHeidelberg x % y can't be more than x and must be less than y. So a % b is at most a, forcing b % (a%b) to be below something that is at most a and therefore is overall less than a.
– Craig Gidney
Feb 5 '17 at 22...
How to get a key in a JavaScript object by its value?
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Avoiding SQL injection without parameters
...ndustry standard library there is" - can you recommend one for .NET? Maybe more than one depending on the DB: SQLServer, MySQL, PostgreSQL? I've looked for SQL-sanitizer but without much luck, so hsve been forced to implement my own, as best I can (which is no doubt far from foolproof).
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Add one row to pandas DataFrame
...l overwrite existing rows, or insert rows, or create gaps in your index. A more robust (but not fool-proof) approach for appending an existing nonzero-length dataframe would be: df.loc[df.index.max() + 1] = [randint(... or prepopulating the index as @FooBar suggested.
– hobs
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Regular Expressions and negating a whole character group [duplicate]
...ther technique, described here as a tempered greedy token, is suitable for more complex problems, like matching delimited text where the delimiters consist of multiple characters (like HTML, as Luke commented below). For the problem described in the question, it's overkill.
For anyone who's intere...
return statement vs exit() in main()
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Actually, there is a difference, but it's subtle. It has more implications for C++, but the differences are important.
When I call return in main(), destructors will be called for my locally scoped objects. If I call exit(), no destructor will be called for my locally scoped objec...